(1 point) A random sample of 70 observations produced a mean of a = 39.5 from a population with a normal distribution and a standard deviation o = 2.14. (a) Find a 95% confidence interval for u (b) Find a 99% confidence interval for u (c) Find a 90% confidence interval for u

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(1 point) Is the number of games won by a major league baseball team in a season related to the team batting average? The table
below shows the number of games won and the batting average (in thousandths) of 8 teams.
IS
Team Games Won Batting Average
1
75
275
103
274
108
273
100
288
96
281
109
287
84
270
97
287
Using games won as the explanatory variable x, do the following:
(a) The correlation coefficient is r =
(b) The equation of the least squares line is y
234
CO
Transcribed Image Text:(1 point) Is the number of games won by a major league baseball team in a season related to the team batting average? The table below shows the number of games won and the batting average (in thousandths) of 8 teams. IS Team Games Won Batting Average 1 75 275 103 274 108 273 100 288 96 281 109 287 84 270 97 287 Using games won as the explanatory variable x, do the following: (a) The correlation coefficient is r = (b) The equation of the least squares line is y 234 CO
(1 point) A random sample of 70 observations produced a mean of a
39.5 from a population with a normal distribution and a standard deviation
o = 2.14.
(a) Find a 95% confidence interval for u
(b) Find a 99% confidence interval for
(c) Find a 90% confidence interval for
Transcribed Image Text:(1 point) A random sample of 70 observations produced a mean of a 39.5 from a population with a normal distribution and a standard deviation o = 2.14. (a) Find a 95% confidence interval for u (b) Find a 99% confidence interval for (c) Find a 90% confidence interval for
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